EP 0942004 A3 20011107 - Anionic polymerization initiators for preparing branched diene rubbers
Title (en)
Anionic polymerization initiators for preparing branched diene rubbers
Title (de)
Anionische Polymerisationsinitiatoren zur Herstellung von verzweigten Dienkautschuken
Title (fr)
Initiateurs de polymérisation anionique pour la préparation de caoutchoucs de diènes ramifiés
Publication
Application
Priority
US 4209698 A 19980313
Abstract (en)
[origin: EP0942004A2] Novel solid supported anionic polymerization initiators that are multiply metalated with Group IA alkali metal atoms are provided and employed to produce extremely high molecular weight branched diene polymers. The initiators are prepared by metalating a particle comprising a thermoplastic polymer or a cured elastomer in the presence of a polar coordinator. The polymers obtained by anionic polymerization employing the initiators are multiply branched, with a polymer chain covalently attached to the particle at virtually every metalation site. The macro-branched polymers exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.
IPC 1-7
IPC 8 full level
B60C 1/00 (2006.01); C08F 2/44 (2006.01); C08F 4/00 (2006.01); C08F 4/02 (2006.01); C08F 4/46 (2006.01); C08F 8/00 (2006.01); C08F 36/04 (2006.01); C08K 3/04 (2006.01); C08L 9/00 (2006.01)
CPC (source: EP US)
B60C 1/00 (2013.01 - EP US); C08F 4/027 (2013.01 - EP US); C08F 4/46 (2013.01 - EP US); C08F 36/04 (2013.01 - EP US); Y02T 10/86 (2013.01 - US); Y10T 152/10 (2015.01 - EP US)
Citation (search report)
- [X] US 5674799 A 19971007 - NUGAY TURGUT [TR], et al
- [X] US 5633323 A 19970527 - LUTZ PIERRE [FR], et al
- [X] US 4297451 A 19811027 - URANECK CARL A, et al
- [X] PATENT ABSTRACTS OF JAPAN vol. 011, no. 394 (C - 465) 23 December 1987 (1987-12-23)
- [X] DATABASE WPI Section Ch Derwent World Patents Index; Class A00, AN 1968-43287Q, XP002176424
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0942004 A2 19990915; EP 0942004 A3 20011107; AR 018748 A1 20011212; BR 9902331 A 20000502; CA 2265238 A1 19990913; JP H11315108 A 19991116; US 2001029278 A1 20011011; US 6136914 A 20001024; US 6271314 B1 20010807; US 6384150 B2 20020507
DOCDB simple family (application)
EP 99103963 A 19990309; AR P990101094 A 19990312; BR 9902331 A 19990315; CA 2265238 A 19990311; JP 6498499 A 19990311; US 4209698 A 19980313; US 56925300 A 20000511; US 85250701 A 20010510